三维网状鸟儿飞行动画效果-html代码-BFW代码库

代码语言：html
所属分类：三维
代码描述：三维网状鸟儿飞行动画效果
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">


  
  
<style>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  overflow: hidden;
}
</style>




</head>

<body translate="no" >
  <canvas id='bird-canvas'></canvas>



<script id='bird-vertex-shader' type='x-shader/x-vertex'>
    precision mediump float;

    #define SPEED 3.0

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    attribute vec2 a_position;

    varying vec2 v_position;

    void main() {
        vec4 new_position = u_projection_matrix * u_view_matrix * u_model_matrix * vec4(a_position, 0.0, 1.0);

        float deltaY = (abs(new_position.x) + 0.3) * sin(abs(new_position.x * 2.0) + u_time * SPEED) / 3.0
            + (sin(abs(a_position.x) * 100.0 + u_time) + sin(a_position.y * 100.0 + u_time)) / 70.0;

        new_position.y += deltaY;

        new_position.x = new_position.x * u_canvas_height / u_canvas_width;

        new_position.x /= (1.0 + 0.9 * new_position.w);
        new_position.y /= (1.0 + 0.9 * new_position.w);

        v_position = a_position;

        gl_Position = new_position;
    }

</script>


<script id='bird-fragment-shader' type='x-shader/x-fragment'>
    precision mediump float;

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    varying vec2 v_position;

    void main() {
        float color = v_position.y;

        if (color > 1.0) {
            color = 1.0;
        } else if (color < 0.0) {
            color = 0.0;
        }

        gl_FragColor = vec4(1.0 - color, 1.0 - color, 1.0 - color, 1.0);
    }
</script>


<!-- ------------------------------------------------------------------------------------------------------- -->
<!-- DOTS                                                                                                    -->
<!-- ------------------------------------------------------------------------------------------------------- -->

<script id='bird-dots-vertex-shader' type='x-shader/x-vertex'>
    precision mediump float;

    #define SPEED 3.0

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    attribute vec2 a_position;

    varying vec2 v_position;


    void main() {
        vec4 new_position = u_projection_matrix * u_view_matrix * u_model_matrix * vec4(a_position, 0.0, 1.0);

        float time = u_time;


        float deltaY = (abs(new_position.x) + 0.3) * sin(abs(new_position.x * 2.0) + time * SPEED) / 3.0
            + (sin(abs(a_position.x) * 100.0 + time) + sin(a_position.y * 100.0 + time)) / 70.0;

        new_position.y += deltaY;

        new_position.x = new_position.x * u_canvas_height / u_canvas_width;

        new_position.x /= (1.0 + 0.9 * new_position.w);
        new_position.y /= (1.0 + 0.9 * new_position.w);

        v_position = a_position;

        gl_Position = new_position;
        gl_PointSize = 1.0;
    }

</script>


<script id='bird-dots-fragment-shader' type='x-shader/x-fragment'>
    precision mediump float;

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    varying vec2 v_position;

    void main() {
        float color = v_position.y;

        if (color > 1.0) {
            color = 1.0;
        } else if (color < 0.0) {
            color = 0.0;
        }

        gl_FragColor = vec4(color, color, color, 1.0);
    }
</script>


<!-- ------------------------------------------------------------------------------------------------------- -->
<!-- TRACK DOTS                                                                                              -->
<!-- ------------------------------------------------------------------------------------------------------- -->

<script id='bird-trackdots-vertex-shader' type='x-shader/x-vertex'>
    precision mediump float;

    #define SPEED 3.0
    #define TIME_DELTA -0.2

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    attribute vec2 a_position;

    varying vec2 v_position;


    void main() {
        vec4 new_position = u_projection_matrix * u_view_matrix * u_model_matrix * vec4(a_position, 0.0, 1.0);

        float time = u_time + TIME_DELTA;


        float deltaY = (abs(new_position.x) + 0.3) * sin(abs(new_position.x * 2.0) + time * SPEED) / 3.0
            + (sin(abs(a_position.x) * 100.0 + time) + sin(a_position.y * 100.0 + time)) / 70.0;

        new_position.y += deltaY;

        new_position.x = new_position.x * u_canvas_height / u_canvas_width;

        new_position.x /= (1.0 + 0.9 * new_position.w);
        new_position.y /= (1.0 + 0.9 * new_position.w);

        v_position = a_position;

        gl_Position = new_position;
        gl_PointSize = 2.0;
    }

</script>


<script id='bird-trackdots-fragment-shader' type='x-shader/x-fragment'>
    precision mediump float;

    #define SPEED 3.0
    #define PI 3.1415926

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    varying vec2 v_position;

    void main() {
        float color = 0.3 * abs(abs(v_position.x) - 4.0) * (1.0 - v_position.y) * (1.0 - sin(PI / 2.0 + u_time * SPEED * 2.0)) * sin(PI + u_time * SPEED);

        if (color > 0.2) {
            color = 0.2;
        } else if (color < 0.0) {
            color = 0.0;
        }

        gl_FragColor = vec4(color * 0.3, color, color * 0.7, 1.0);
    }
</script>


<!-- ------------------------------------------------------------------------------------------------------- -->
<!-- TRACK DOTS 2                                                                                            -->
<!-- ------------------------------------------------------------------------------------------------------- -->

<script id='bird-trackdots2-vertex-shader' type='x-shader/x-vertex'>
    precision mediump float;

    #define SPEED 3.0
    #define TIME_DELTA -0.2

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    attribute vec2 a_position;

    varying vec2 v_position;


    void main() {
        vec4 new_position = u_projection_matrix * u_view_matrix * u_model_matrix * vec4(a_position, 0.0, 1.0);

        float time = u_time + TIME_DELTA;


        float deltaY = (abs(new_position.x) + 0.3) * sin(abs(new_position.x * 2.0) + time * SPEED) / 3.0
            + (sin(abs(a_position.x) * 100.0 + time) + sin(a_position.y * 100.0 + time)) / 70.0;

        new_position.y += deltaY;

        new_position.x = new_position.x * u_canvas_height / u_canvas_width;

        new_position.x /= (1.0 + 0.9 * new_position.w);
        new_position.y /= (1.0 + 0.9 * new_position.w);

        v_position = a_position;

        gl_Position = new_position;
        gl_PointSize = 1.0;
    }

</script>


<script id='bird-trackdots2-fragment-shader' type='x-shader/x-fragment'>
    precision mediump float;

    #define SPEED 3.0
    #define PI 3.1415926

    uniform float u_canvas_height;
    uniform float u_canvas_width;

    uniform mat4 u_model_matrix;
    uniform mat4 u_view_matrix;
    uniform mat4 u_projection_matrix;

    uniform float u_time;

    varying vec2 v_position;

    void main() {
        float color = 0.3 * abs(abs(v_position.x) - 4.0) * v_position.y * (1.0 - sin(PI / 2.0 + u_time * SPEED * 2.0)) * sin(u_time * SPEED);

        if (color > 0.2) {
            color = 0.2;
        } else if (color <.........完整代码请登录后点击上方下载按钮下载查看